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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 8 — Apr. 15, 2006
  • pp: 1064–1066

Highly efficient, 0.84 slope efficiency, 901 nm, quasi-two-level laser emission of Nd in strontium lanthanum aluminate

Voicu Lupei, Gerard Aka, and Daniel Vivien  »View Author Affiliations


Optics Letters, Vol. 31, Issue 8, pp. 1064-1066 (2006)
http://dx.doi.org/10.1364/OL.31.001064


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Abstract

The possibility of using direct pumping into the emitting level of the Nd 3 + ion in magnesium-compensated strontium lanthanum aluminate ( Sr 1 x La x y Nd y Mg x Al 12 x O 19 ) to improve 900 nm F 3 2 4 I 9 2 4 laser emission is discussed. Selection of the composition parameters x and y for optimization of laser emission and reduction of heat generation is based on the spectroscopic and crystal growth characteristics. Pumping in the 865.5 nm absorption band I 9 2 4 ( Z 1 ) F 3 2 4 ( R 1 ) transforms the laser process into a quasi-two-level scheme of very low (below 4%) quantum defects. A very high slope efficiency (over 84%) for 901 nm continuous-wave laser emission is demonstrated with Ti:sapphire laser pumping in this band for a crystal with x = 0.4 and y = 0.05 .

© 2006 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(140.3530) Lasers and laser optics : Lasers, neodymium
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 5, 2005
Revised Manuscript: December 21, 2005
Manuscript Accepted: December 27, 2005

Citation
Voicu Lupei, Gerard Aka, and Daniel Vivien, "Highly efficient, 0.84 slope efficiency, 901 nm, quasi-two-level laser emission of Nd in strontium lanthanum aluminate," Opt. Lett. 31, 1064-1066 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-8-1064

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